Update to Chromium //base at Chromium commit e3a753f17bac62738b0dbf0b36510f767b081e4b.

mac/foundation_util.h

Index: mac/foundation_util.h
diff --git a/mac/foundation_util.h b/mac/foundation_util.h
index 353ed7c6318d6ecf986bf65d51fb329def4d2088..6e8505da21b7468158dfd0fd14cba016615a2262 100644
--- a/mac/foundation_util.h
+++ b/mac/foundation_util.h
@@ -373,6 +373,14 @@ BASE_EXPORT NSString* FilePathToNSString(const FilePath& path);
 // Converts |str| to a FilePath. Returns an empty path if |str| is nil.
 BASE_EXPORT FilePath NSStringToFilePath(NSString* str);
 
+#if defined(__OBJC__)
+// Converts |range| to an NSRange, returning the new range in |range_out|.
+// Returns true if conversion was successful, false if the values of |range|
+// could not be converted to NSUIntegers.
+BASE_EXPORT bool CFRangeToNSRange(CFRange range,
+                                  NSRange* range_out) WARN_UNUSED_RESULT;
+#endif  // defined(__OBJC__)
+
 }  // namespace mac
 }  // namespace base